Vinyl trichlorosilane is widely used and there are not many companies in the industry.

Vinyl trichlorosilane appears as a colorless to light yellow transparent liquid. It is easy to hydrolyze and alcoholyse. Its chemical formula is C2H3Cl3Si. It is an important raw material for the synthesis of many other vinyl-based organosilicon coupling agents. It can also be used in chlorine-containing resins such as polyethylene. Modification of vinyl chloride, etc., or copolymerization with chlorine-containing monomers. In addition, vinyl trichlorosilane can be used as a surface treatment agent for glass fiber to improve the adhesion between glass fiber and epoxy resin, unsaturated resin, acrylic resin, etc.; it can be used as a treatment agent for reinforced plastic laminates to improve the Heat resistance, moisture resistance and mechanical strength of plastic laminates.

According to the “In-depth Investigation and Analysis Report on the Market Supply and Demand Status and Industry Operating Indicators of the Vinyl Trichlorosilane Industry from 2023 to 2027” released by the Industrial Research Center shows that at this stage, the industry mainly uses trichlorosilane and acetylene as raw materials to synthesize vinyl trichlorosilane. This process has shortcomings such as easy secondary reactions, high proportion of by-products, and high catalyst unit consumption. In addition, researchers have also developed a method to prepare vinyltrichlorosilane using trichlorosilane and acetylene as the main raw materials.

From the perspective of enterprises, there are few manufacturers in the vinyltrichlorosilane industry, mainly including Zhejiang Kaihua Synthetic Materials Co., Ltd., Tangshan Sanfu New Materials Co., Ltd., Jiangxi Chenguang New Materials Co., Ltd., Wenshang Huachen New Materials Co., Ltd. Shandong Silicon New Materials Co., Ltd. Among them, Zhejiang Kaihua Synthetic Materials Co., Ltd. plans to relocate its factory in 2021 and build a 10,000-ton/year vinyltrichlorosilane production line.

From the upstream of the industrial chain, trichlorosilane can be divided into two categories: photovoltaic grade trichlorosilane and ordinary grade trichlorosilane. Among them, ordinary grade trichlorosilane is mainly used to produce silane coupling agents. The main trichlorosilane production enterprises in my country include Zhejiang Xin’an Chemical Group Co., Ltd., Tangshan Sanfu Silicon Industry Co., Ltd., Henan Shangyu New Energy Co., Ltd., Jiangxi Chenguang New Materials Co., Ltd., and Xintai Hengliying Silicon Industry Co., Ltd. Company etc. In 2022, my country’s trichlorosilane output will be more than 360,000 tons.

From the downstream of the industrial chain, vinyl trichlorosilane is currently mainly used to produce synthetic vinyl trimethoxysilane (A-171) and vinyl tributyl ketone oxime silane. Among them, vinyl trimethoxysilane can be used as a comonomer, coupling agent, or cross-linking agent; vinyl tributyl ketone oxime silane is mainly used as a curing agent (cross-linking agent) for room temperature vulcanized silicone rubber.

Industry analysts said that the domestic vinyl trichlorosilane industry has a good development foundation and the development of supporting industries is relatively complete. At the same time, the number of companies in the industry There are few, and the market competition pattern is relatively stable. In recent years, there have been few domestic innovative research results on vinyltrichlorosilane, only Zhejiang Fushite Silicon Materials Co., Ltd., Xinte Energy Co., Ltd., Zhejiang Jinggong New Materials Technology Co., Ltd., etc. A few companies have conducted research on vinyltrichlorosilane synthesis equipment and preparation methods.